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If CPU heatsink is covered with a lot of dust, it will cause CPU temperature to get too high, resulting in a number of computer problems such as blue screen, automatic restart, and other symptoms that you may need to remove. CPU heatsink to be cleaned, you will find that silicone grease on CPU has dried up. For friends who don't have silicone lube in their hands, creative users can use toothpaste instead of silicone lube, so can toothpaste replace silicone lube on CPU? Let me give you popular science.

What is function of CPU lubrication?

CPU silicone grease can accelerate heat conduction, increase contact area, and fill gap between CPU and heatsink.

Can silicone grease coat a CPU?

Because there are many grooves between surface of CPU and base of heatsink, if silicone grease is not filled, gap between heatsink and CPU will be large and contact area will be small. , so CPU can not quickly dissipate high temperature, and CPU temperature will rise. High, it will cause computer blue screen, automatic restart, crash, CPU frequency reduction and other reasons. CPU Silicone Grease has good thermal conductivity, heat resistance and insulating properties, is an ideal dielectric material for heat-resistant devices, does not cause corrosion during operation, and does not affect metal with which it comes into contact.

Is it possible to replace lubrication of processor with toothpaste?

The choice of CPU heat dissipation material mainly depends on thermal conductivity, heat resistance, electrical insulation, metal non-corrosion, non-curing, low volatility and other aspects of selected material. The CPU thermal paste uses organic silicon as main raw material, adding materials with excellent heat resistance and thermal conductivity. Good silicone grease contains many metals. Some high quality greases contain silver, lead, tin or even gold for better thermal conductivity.

We know that main ingredients of toothpaste are abrasives, such as calcium carbonate (remove dirt), calcium hydrogen phosphate (increase brightness), aluminum hydroxide (remove smoke), etc., also contain surfactants, binders wetting agents Fluoride in some toothpastes combines with apatite on surface of tooth to form a harder fluorapatite that can prevent cavities. Among them, fluorine causes corrosion. Long-term use will not corrode surface of CPU and base of CPU cooler. In addition, toothpaste is conductive. Misuse or prolonged use may cause a short circuit. Therefore, it is not recommended to switch to toothpaste, but if you are in a hurry, you can use it instead!

Disadvantages of replacing silicone CPU grease with toothpaste

1. Toothpaste corrodes surface of processor and fan. It contains a strong acidic substance called fluorine, which can corrode metal and glass. Over time, font on surface of processor will become blurred, which will affect life of processor.

2. If toothpaste is used for a long time, it will affect CPU heat dissipation. It contains a lot of water and binders. As water heats up and evaporates, it forms a "thermal insulation layer" that seriously affects heat dissipation.

3. The toothpaste will stick CPU and fan together, making it difficult to separate them. Contains adhesive as a gasket, after drying, it is difficult to separate processor from fan. If CPU is pulled out with fan on AMD fan, it will cause physical damage.

CPU Thermal Grease is a paste used to fill gap between CPU and fan contact surface. Since thermal conductivity of air is poorer than that of solids and liquids, paste thermal paste can completely fill these gaps and direct heat generated by processor to the cooling fan. Good silicone grease contains a lot of metal. So don't save a few bucks and inflict unnecessary losses that aren't worth it.

After baking for a long time, as water evaporates, thermal conductivity of toothpaste drops sharply, and it causes corrosion. As a general rule, we do not recommend using toothpaste to replace silicone grease for an extended period of time. In addition, silicone grease is also very cheap. There is no need to save this little money. In fact, if you don't have thermal paste yet, you can use toothpaste to temporarily replace it. This can indeed give same effect as silicone grease in a short time, but remember that it won't take too long. It is best to replace it with thermal paste within 24 hours.